diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e4f236e6f61ea96f9c88eb836e9893571c001e9d..6bb658cccd624116097dfac528ec5f549a2cb723 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -176,20 +176,20 @@ version:
 dind-build:
   extends: .dind
   variables:
-  - EXPORT_TAG:
+    EXPORT_TAG:
 
 dind-publish:
   image: ${CI_REGISTRY}/${CI_PROJECT_PATH}/dind:${INTERNAL_TAG}
   extends: .dind
   variables:
-  - EXPORT_TAG: ${EXPORT_TAG}
+    EXPORT_TAG: ${EXPORT_TAG}
 
 dind-default:
   image: ${CI_REGISTRY}/${CI_PROJECT_PATH}/dind:${INTERNAL_TAG}
   extends: .dind
   when: manual
   variables:
-  - EXPORT_TAG: master
+    EXPORT_TAG: master
 
 base:
   parallel: